Carlson's Cremator Ported Choke Tubes -These chokes feature our brand new Triple Shot Technology. TST is a series of three graduated rings in the taper section of the choke tube, that allow a more gradual transition from the shotgun bore to the final constriction. The Cremator series conveys a host of benefits to the shooter, like reduced pellet deformation, less flyers, and denser patterns. These choke tubes are ported to help reduce muzzle jump and recoil. These chokes feature our brand new Triple Shot TechnologyThese choke tubes are ported to help reduce muzzle jump and recoil